Piston-cooling device



l March 1927 o. E. JORGENSEN PISTON COOLING mm Filed July 22, 1924' v I ...\-II

nu :ainnaflunuvao ll J.I...........,..I...1......IYYYUQn INN :MTM M DJ I 1 the engine an Patented Mar. 1, 1927.

UNITED-STATES PATENT OFFICE.

OLL'V ESNIL JORGENSEN, 0! FOREST HILLS, NEW YORK, ASSIGNOR '10 WORTHINGTON PUMP AND MACHINERY CORPORATION, OF NEW YORK, N. Y., A. CORPORATION OF VIRGINIA.

PISTON-COOLING DEVICE Application filed July 22,

This invention relates to that class of piston cooling devices for internal combustion engines and the like, in which cooling liquid is circulated through the piston by a 6 telescoping pipe system, the object of the invention being to provide an improved construction for avoiding injury from misalinement or irregularity of'movement between the telescopin parts in the operation of avoiding objectionable leakage of the cooling liquid.

The invention includes a novel mounting for the stationary portion of the telescoping system by which all this portion, including the stufiing boxes for the movable pipes, is carried on a flexible or universal joint, so that the whole stationary portion of the telescoping system swings with the movable pipes for compensation of misalinement of irregular movement. The invention includes also certain specific features of construction and combinations of parts as particularly pointed out hereafter.

For a full understanding of the invention a detailed description of a construction embodying all of the features of the same in a referred form will now be given in connection with the accompan ing drawings forming part of this speci cation and so the features forming the invention then be specifically pointed out in the claims.

In the drawings- V Figure 1 is an elevation partly in section of an internal combustion en ine cylinder and piston equipped with the device;

Figure 2 is a vertical section of the telescoping system on a larger scale, and I Figure 3 is a detail section on the line .3-3ofFig.2'.-

Referring to the drawings, the invention is shown as applied to a' double-acting vertical cross-head engine, but it will be understood that it is equally' applicable to singleacting engines and to types of engines other than cross-head engines. In the construction shown, A is the main frame of the engine, B the cylinder frame, C, C the outer and inner cylinders in which move the outer and innerpistons D, D of the double-actpipes 18, 19 carryin at 1924. Serial No. 727,499.

from the pistons. The passa e 11 opens directly into the chamber 10 o iston D, and for cooling the piston D aam 1 is used in passage 11 which compels the supply liqulcl in passage 11 to circulate to and from the cooling chamber 10 in piston D throu h passages 2, as shown in dotted lines in Flg.

1. The passage 11 and pipe 12 extend to the cross-head F and. there are connected,

respectively, by passages 13, 14 in bracket 1i} carried by the cross-head, with supply pipe 16 and discharge pipe 17, which are secured'in and move with the bracket 15 and cross-head F, these pipes being the movable pipes of the telesco ing system. In the construction shown, t e liquid is supplied through passage 11 and discharged through central ipe 12, and this is preferable, but it wil be understood that the connections may be reversed, and liquid supplied to the pipe 12 and discharged through the passage 11, both methods. of supply and disc arg'e being well known in the art.

Pipes 16, 17 telescope, respectively, through pipesl8, 19 which form the stationary pipes of the telescoping system, these their ends stufling oxes 20 through wliich the movable pi s 16, 17 move. The stationary pipe 18 his a head 21 forming a chamber connected with I drained offthrough drain pipe 24 connecting with pipe 18 adjacent to the stufiing pipes through box. The stationary pipe 19, in which discharge pipe 17 telescopes, has an outlet through which the water is discharged in any suitable manner, and this pipe 19 carries a head 26. The heads 21, 26 of pipes 18, 19 are formed with stems 27by which the stationary pipes are supported by universal joints 28 on cylinder frame 13, these joints being shown as ball and socket joints, although any suitable form of universal or similarly flexible joint maybe used. Side pressure on the stufiing box is thus pre vented and the leakage and packing wear resulting from this avoided. Provision is preferably made, however, for removing and collecting cooling liquid or lubricating oil which may adhere to the pipes 16, 17, or

cooling liquid which may leak along these stuffing boxes 20, and in the construction shown scrapers 29 are provided acting on the pipes 16, 17 on their movement in opposlte directions, these scrapers being carried by a slide 30 free to move sidewise with the pipes 16, 17 in support 31 on the engine frame A. Most of the coolin liquid Will be discharged on the downwar movementof the pipes 16, 17, by the upper scrapers 29, and these scrapers deliver the liquid removed from pipes 16, 17 to trough 4 formedjn the support 31, fromwhich the liquid may be piped ofi as desired. The lower scrapers 29 take care of any water 'or lubricatmg oil that may collect on the pipes below support 31.

It will be seen that the invention provides av very simple and eflicient telesco ing system, provi 'ng against objections. le' leakage by the use of.stufling boxes between the telescoping pipes, while all misalinement or irregularity of movement of the movable pipes s permitted without injury to the system, b the freedom of movement with the move is pipesof the entire stationary portion of the telescoping system, including the stationary pi es and stufiin boxes.

It will be un erstood that t e invention is not to be limited to the specific construct on or arrangement of parts shown, but

that. many changes in the construction may be made while retaining the invention de What is claimedis:

1. An engine piston coolingsystem, having a liquid-conducting pipe moving with the piston, a stationary pipe within which the'moving' pipe telesco es, a stufling box between the moving an stationary pipes, liquid connections or thestationary pipe, and a flexible mounting for the stationary pipe and stuflin tionary 1pe an stufiing box to move sidewise wit and in parallelism with the moving pipe.

2. An engine piston cooling system, hay ing liquid supply and dischargepipes movhaving passages charge of cooling liquid,

box permitting the sta ing with the piston, stationary pipes within which the moving pipes telescope, stufiing .boxes between the. moving and stationary pipes, supply and discharge connections for 3. An en ine piston cooling system, .having a liqui supply pipe moving with the piston, a stationary pipe within which the moving pipe telescopes, a stufling box between the moving and stationary pipes, con-- nections for supplyin liquid to the stationary pipe, a exib e mounting for the stationary pipe and stuflinghlliox permitting the stationary pipe and stu moving pipe, and a scraper outside the stuffing box ing pipe, said scraper being movable sidewise with the moving pipe.

4. An engine piston cooling system, having liquid supply and discharge pipes moving with the piston, stationary pipes within which the moving pipes telescope, stufiing boxes between the moving and stationary pipes, supply and dischar e connections for said stationary pipes, flexi le mountings for the stationary pipes and stufiing boxes ermitting the stationary pipes and st g boxes to move sidewise with and in parallelism with-the movingpipes, and scra ers for said moving pipes outside the stu g boxes for removing liquid from the moving pipes, said scrapers being movablesidewise with the moving pipes.

'5. An engine piston cooling system havin a stationary pipe extending generally are lel to the piston rod .of the engine, a exible mountin remote rom the crank shaft of the engine va stufiing box carried by the opposite en stationary pipe.

6. In an en ine piston cooling systemcomprising a ollow piston, ston re and a cross-head having liquid passages connected respective passages of the piston, the combination, with a bracket secured to the crosshead and having liquid passages in commumcation with the respective passages ofg box to move sidewlse with and in parallelism with the pi e,' and connections for supplying liqui to t e with the for removing hquid "from the mov for that end of the stationary pipe for. the supply-i1? and dis-- the cross-head, a pair of movable pi one for each passage, secured b their en nea est the crank shaft to the racket and movable therewith, a pair of stationary into which. the .respective movable p pes vided with a stufiingbox at its end nearest the. crank shaft, in which stufiing box its mo able pipe slides, each stationary pipe being provided at its end remote from the crank-shaft with a flexible mounting connecting it to the engine frame, means for supplying water to one stationary pipe, and means for discharging Water from the other stationary pipe.

In testim0ny whereof, I have hereunto set my hand.

OLAV ESKIL JORGENSENL 

